using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using System.IO;
using FastReport.Utils;

namespace FastReport
{
    /// <summary>
    /// Represents a collection of styles used in the <see cref="Report.Styles"/>.
    /// </summary>
    public class StyleCollection : CollectionBase, IFRSerializable
    {
        private string name;

        /// <summary>
        /// Gets or sets the name of the style.
        /// </summary>
        public string Name
        {
            get { return name; }
            set { name = value; }
        }

        /// <summary>
        /// Gets or sets the element at the specified index.
        /// </summary>
        /// <param name="index">Index of an element.</param>
        /// <returns>The element at the specified index.</returns>
        public Style this[int index]
        {
            get { return List[index] as Style; }
            set { List[index] = value; }
        }

        /// <summary>
        /// Adds the specified elements to the end of this collection.
        /// </summary>
        /// <param name="range"></param>
        public void AddRange(Style[] range)
        {
            foreach (Style s in range)
            {
                Add(s);
            }
        }

        /// <summary>
        /// Adds an object to the end of this collection.
        /// </summary>
        /// <param name="value">Object to add.</param>
        /// <returns>Index of the added object.</returns>
        public int Add(Style value)
        {
            return List.Add(value);
        }

        /// <summary>
        /// Inserts an object into this collection at the specified index.
        /// </summary>
        /// <param name="index">The zero-based index at which value should be inserted.</param>
        /// <param name="value">The object to insert.</param>
        public void Insert(int index, Style value)
        {
            List.Insert(index, value);
        }

        /// <summary>
        /// Removes the specified object from the collection.
        /// </summary>
        /// <param name="value">Object to remove.</param>
        public void Remove(Style value)
        {
            int i = IndexOf(value);
            if (i != -1)
                List.RemoveAt(i);
        }

        /// <summary>
        /// Returns the zero-based index of the first occurrence of an object.
        /// </summary>
        /// <param name="value">The object to locate in the collection.</param>
        /// <returns>The zero-based index of the first occurrence of value within the entire collection, if found; 
        /// otherwise, -1.</returns>
        public int IndexOf(Style value)
        {
            return List.IndexOf(value);
        }

        /// <summary>
        /// Returns the zero-based index of the first occurrence of a style with specified name.
        /// </summary>
        /// <param name="value">The name to locate in the collection.</param>
        /// <returns>The zero-based index of the first occurrence of value within the entire collection, if found; 
        /// otherwise, -1.</returns>
        public int IndexOf(string value)
        {
            for (int i = 0; i < Count; i++)
            {
                Style s = this[i];
                if (String.Compare(s.Name, value, true) == 0)
                    return i;
            }
            return -1;
        }

        /// <summary>
        /// Determines whether an element is in the collection.
        /// </summary>
        /// <param name="value">The object to locate in the collection.</param>
        /// <returns><b>true</b> if object is found in the collection; otherwise, <b>false</b>.</returns>
        public bool Contains(Style value)
        {
            return IndexOf(value) != -1;
        }

        /// <summary>
        /// Determines whether a style with specified name is in the collection.
        /// </summary>
        /// <param name="value">The style name to locate in the collection.</param>
        /// <returns><b>true</b> if object is found in the collection; otherwise, <b>false</b>.</returns>
        public bool Contains(string value)
        {
            return IndexOf(value) != -1;
        }

        /// <inheritdoc/>
        public void Serialize(FRWriter writer)
        {
            writer.ItemName = "Styles";
            if (!String.IsNullOrEmpty(Name))
                writer.WriteStr("Name", Name);
            foreach (Style s in this)
            {
                writer.Write(s);
            }
        }

        /// <inheritdoc/>
        public void Deserialize(FRReader reader)
        {
            Clear();
            Name = "";
            reader.ReadProperties(this);
            while (reader.NextItem())
            {
                Style s = new Style();
                reader.Read(s);
                Add(s);
            }
        }

        /// <summary>
        /// Saves the collection to a stream.
        /// </summary>
        /// <param name="stream">Stream to save to.</param>
        public void Save(Stream stream)
        {
            using (FRWriter writer = new FRWriter())
            {
                writer.Write(this);
                writer.Save(stream);
            }
        }

        /// <summary>
        /// Saves the collection to a file.
        /// </summary>
        /// <param name="fileName">The name of the file.</param>
        public void Save(string fileName)
        {
            using (FileStream f = new FileStream(fileName, FileMode.Create))
            {
                Save(f);
            }
        }

        /// <summary>
        /// Loads the collection from a stream.
        /// </summary>
        /// <param name="stream">Stream to load from.</param>
        public void Load(Stream stream)
        {
            using (FRReader reader = new FRReader(null))
            {
                reader.Load(stream);
                reader.Read(this);
            }
        }

        /// <summary>
        /// Loads the collection from a file.
        /// </summary>
        /// <param name="fileName">The name of the file.</param>
        public void Load(string fileName)
        {
            using (FileStream f = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read))
            {
                Load(f);
            }
        }

        /// <summary>
        /// Creates exact copy of this collection.
        /// </summary>
        /// <returns>The copy of this collection.</returns>
        public StyleCollection Clone()
        {
            StyleCollection result = new StyleCollection();
            foreach (Style s in this)
            {
                result.Add(s.Clone());
            }
            return result;
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="StyleCollection"/> class with default settings.
        /// </summary>
        public StyleCollection()
        {
            name = "";
        }
    }
}
